Rotary fan.



M. MAHAN.

ROTARY FAN. APPLICATION FILED Nov. I6', IsI4.

Patented May16, 1916.

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ATTORNEY WITNESS/5S THE COLUMBIA. PLANOGRAPH co. WASHINGTON, n f.

MARY MAHAN, OF KANSAS CITY, MISSOURI.

ROTARY FAN.

Specica-tion of Letters Patent.

Patented May 16,1916..

Application led November 16, 1914. Serial No. 872,364.

To all whom t may concern.'

Be it known that I, MARY MAHAN, a. citizen of the United States, residing at Kansas City, in the county of Jackson and State of' Missouri, have invented a new and useful Rotary Fan, of which the following is a specification.

My invention relates to improvements in rotary fans which are operated by means of a spring actuated train ofv gears.

The objects of my improvement are, first, to provide a. cheap, durable and portable rotary fan; second, to provide a rotary fan which may be operated at. different speeds,

and, third, to provide means for starting and stopping the fan, and for changing its speed. I attain these objects by the mechanism illustrated in the accompanying drawing, in which j Figure 1 is a vertical sectional view of the fan showing my invention applied thereto, and Fig. 2 is a vertical sectional view of the springs, which actuatef the gears, showing method of applying the power of the springs to propel the fan;

'Similar numerals ofreference refer to similar parts throughout the drawing.

The base 1, vertically extending plates 2 and 3, standard 4, and the horizontally extending plate 5, constitute the frame which supports the mechanism, hereinafter described, and which are made of suitable metal, such asiron, brass and the like, pref.- erably brass. The plate 5 is removably secured to the top ends of the plates 2 and 3 by fastening devices 6 which are extended through the plate and pierce the ends of said plates.

A boss 7 is formed on the outer side of ,plate 2, a little distance above the4 base 1,-and a boss 8 is formed onthe inner side of said plate opposite to the boss. 7, and a hole is bored horizontally through said bosses and the plate 2 to provide a journal. bearing 9.

A similar hole is bored in the side of the standard 4` opposite to and in line withthe j ournal'beari-ng 9 to provide a journal bearing 1.0; A shaft 11 is revolubly mounted in the bearings 9 and 10, and one end thereof' extended outwardly of the plate 2, on which extension acrank 12 is mounted and adapted for turning the shaft. A gear-- wheel 18, having-a hub provided on its inner end with a spring-barrel 14, is secured on the shaft 11 adjacent. the plate. 2. A spring-barrel 14,*` is mounted' onthe. shaft 11,

inwardly of spring-barrel 14. A ratchetwheel 17, having a hub 18 at one side thereof and piercing the spring-barrel 15, is mounted on the shaft 11, adjacent the standeo ard 4.l A dog 19 is pivotally mounted on the. side of the standard 4 above the ratchetwheel 7 and adapted to drop by gravity and engage the ratchet-wheel. A coiled spring 20 1s confined in the spring-barrel 14, the in- 65 ner en d of which is attached to the hub 16 on spring-barrel 15, and the opposite end is attached to the peripheral wall of the springbarrel 14. A coiled spring 21 is confined in spring-barrel 15, the inner end of which is 7o attached to the hub 18, on the ratchet-wheel 17, and the opposite end is attached to the peripheral wall of the spring-barrel 15. A boss l2 is formed on the inner side of the plate 2 a distance vertically above the boss 75 8, and provided with a hole, in which, a horizontally extending shaft 28 is rigidly secured, and on which a gear wheel 24, having less diameter than gear-wheel 18 is movably mounted, so that it will be engaged by 8o said gear-wheel 13. A collar 25, is secured on the terminal end of shaft 23 to hold the gear-wheel 24 in place. A boss 26 is formed on the inner side of the plate 2, a distance vertically above the boss 22, and provided e5 with a hole, in which, a horizontally extending shaft 27 is rigidly secured, and on which a gear-wheel 28, having less diameter than gear-wheel 24 is movably mounted so that it will be engaged by said gear-wheel 24. A collar 29 is secured on the terminal end of shaft 27 to hold the gear-wheel 28 in place. A boss 30 is formed on the inner side of the plate 2, a distance vertically above the boss 26, and provided with a hole, in which, a o5 horizontally extending shaft 31 is rigidly secured, and on which a gear-wheel 82, having less diameter than gear-wheel 28 is movably mounted so that it will be engaged by said gear-wheel 28. A collar 33 is secured on the terminal end of shaft 31 to hold the gear-wheel in place. A lug 84 is formed on the hub ofthe gear-wheel 32 and is extended outwardly at right angles to the side of said hub a suitable distance rso that ity will engage the end of a stop-rod 35, when the latter is extended within the circle described by the lug in its rotary movement, hereafter more fully explained.

The `above described train of gears, in con- 1 nection with the coupled coiled springs previously described, are designed andlocated 1 and a similar boss 37 formed on the inner side of said plate in line with the boss 36. A horizontally extending' shaft 38 is journaled at one end in the side of the standard 4 land its opposite end portion is journaled in the bosses 36 and 37, and is extended outwardly of the plate 3 a distance, on which extension, a crank 39, is mounted andadapted to turn said shaft. A gear-wheel 40, having a spring-barrel 41 attached toits hub is mounted on the shaft 38 adjacent the inner side of the plate 3. A spring-barrel 42, having a hub piercing the spring-barrel 41 is mounted on the shaft 38 inwardly of the spring-barrel 41. A ratchet-wheel 43, having a hub piercing the spring-barrel 42, is mounted on said shaft adjacent the standard 4. A dog 44 is pivotally mounted on the side of the standard 4 above the ratchetwheel 43 and adapted to drop by gravity and engage the said ratchet-wheel. A coiled spring similar to the coiled spring 20 is confined in the spring-barrel 41 and its inner end attached to the hub on the springbarrel 42 and its outer end attached to the peripheral wall of said spring-barrel. A similar coiled spring is confined in the spring-barrel 42 and its inner end attached to the hub on the ratchet-wheel 43, and its outer end attached to the peripheral wall of the said spring-barrel. A boss 45 is formed on the inner rvside of the plate 3 vertically above the boss 37, in which a shaft 46 is rigidly secured and on which shaft, a gearwheel 4 7 is movably mounted. A collar 48 is secured on the terminal end of the shaft to hold the gear-wheel in place. A boss 49 is formed on the inner side of the plate vertically above the boss 45, in which aV shaft 50 is rigidly secured and on which shaft a gear-wheel 51 is movably mounted. A collar 52 is secured on the terminal end of said shaft to hold the gear-wheel in place. A lug .53 is formed on the hub of the gear-wheel 51 adjacent the plate 3 and extended outwardly at right angles to the side of the hub, so that it will engage the e-nd of a stoprod 54 when the latter is extended within the circle described by the lug'in its rotary movement.

The gear-wheels 40, 47 and 51 Vform a train of gears which, in connection with the coupled coiled springs on the shaft 38, are designed andlocated to independently propel the fan, hereafter mentioned at a predetermined rate of speed, different than its speed when propelled by the train of gears on the plate 2.

A horizontally extending shaft 55 is journaled in the plates 2 and 3 a distance above the train of gearson said plates, and a fan 55 at right angles thereto, and is extended through the slot 60 in the tube 59,r so that Y the tube will be limited in sliding forwardly and backwardly by the pin engaging the ends of the slot, said sliding movement of the tube being limited to a distance in either direction necessary to permit the pinions 61 l and 62 vto be engaged by the adjacent trainv of gears. The pin 63 also acts as a cog which is engaged by the tube 59 in the rotary movement of the latter, thereby imparting synchronous motion to the shaft 55. l

A pulley 64 is mounted on the tube 59 and is provided with a channel 65 in its peripheral face. A lever 66 isextended vertically downward through the slot 67 in the plate 5 directly over the pulley 64V yin line with the channel 65, and is movably pivoted to the lug 68, and the lower end of the lever is'provided with pin 69 which is extended inwardly at right angles to the inner face of the lever and penetrating the channel 65 in the pulley 64 in frictional engagement with thesides of said channel.

The stop-rods 35 and 54 are each extended vertically downward throughthe plate 5 at opposite ends thereofV and are guided by guides 70 Von the under .side of the plate 5 and guides 71 on the plates 2 and 3. A spiral spring 72is mounted on the upper end of each lstop-rod in ,engagement with the button 72 and the top of the plate 5, adapted to normally hold thestop-rods in released position.` The train of gears onV the opposite plates 2 and 3 are adapted to provide ,independent means for propelling the fan at variable speeds and the sliding Vpinions described are adapted for shifting from one train of gears to the opposite one, either to change speed, orto obtain a longer run of the fan. Y

To operate `the fan the crank is turned to the right, which action turns the shaft 11 and the spring barrels 14 and 15 and the ratchet-wheel 17 thereby winding the coiled springs 20 and 21, the spring-barrel 14 revolving about the hub on the spring-barrel 15,'to which the inner end of the coiled spring 20 is attached, effects a winding of the latter, and when the coiled spring 20 is wound the spring-barrel is revolved about Vthe hub'on the ratchet-wheel 17, thereby windingV the coiled spring 21, and the dog 19 1n l'engagement with the ratchet-Wheel ing motion to the train of gears and to the tube 59, the latter engaging the cog 63 on the shaft 55 and communicating motion to said shaft and the fan mounted thereon. If

-it is desired to stop the fan the stop-rod adjacent the operating train of gears is pushed downward so that the lug on the' foremost gear-wheel of the train of gears engages the end thereof. If it is desired to Start the fan the stop-rod adjacent the train of gears in engagement with the pinion on the tube is pulled upward to release position, when the train of gears will operate to drive the fan.

In the drawing, Fig. 1, the fan is shown operative by the spring actuated train of gears on the plate 3 and to change the drive therefrom to the opposite train of gears the stop-rod 54 is pressed down until its lower.

' end is engaged by the lug 53 on the hub of the gear-wheel 62, which action stops the drive and the lever 66 is then pulled rearward and the pin 69 on the lever engages the pulley 64 and effects a sliding forward of the tube 59 until the cog 63 is lodged at the opposite end of the slot 60 in the tube, when the pinion 62 will be disengaged from the train of locked gears on the plate 3 and the pinion 16 will be engaged by the train of lock gears on the plate 2, and the stoprod 35 is drawn upward, which action re leases the train of gears on the plate 2 and the fan is thereby revolved. While I show a train of gears on the plate 2 having four gear-wheels and a train of gears on the plate 3 having three gears it is understood that any reduction or modification thereof may be used within the scope of the appended claim.

Having described my invention what I claim is:

In a rotary fan, the combination with the casing having the independently operable duplex set of spring actuated gears mounted thereon, of a revoluble shaft journaled in the casing and provided intermediately with a cog and outwardly of the casing with a circular fan having blades, a tube slidably mounted on the shaft inside the casing and having a longitudinally extending slot pierced by the cog on said shaft and provided at its opposite ends with a pinion and intermediately with a rigid pulley having a channeled perimeter, a pivotally mounted lever, piercing the casing and having an inwardly extending pin penetrating the channel in the pulley adapted for sliding the pinions to engage and disengage the adjacent set of gears, and a slidable rod piercing the casing and adapted for engaging the lug on the advance gear wheel of the set of gears to stop and start the fan.

MARY MAHAN.

Witnesses:

ELMER LEE DELLEANGER, BERTHA GEARY.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. G. 

